Category
Herbs
Fresh vs dried herbs differ greatly by volume. Choose the correct form and cut (whole vs chopped).
Source: USDA FDC - herb search
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Cluster composition
This category covers 5 ingredients. The dominant attribute clusters are chopped or sliced produce and dense or heterogeneous items.
- chopped or sliced produce — 3 ingredients
- dense or heterogeneous items — 2 ingredients
Primer
These category tables convert volume to mass using ingredient-specific densities. Use weight for precision; volume varies with packing, cut, and temperature.
Methodology
- Density references are summarized from U.S. government sources (USDA FoodData Central, USDA FNDDS) and lab-standard data when available.
- Conversions keep higher-precision intermediates and round to practical kitchen values.
- Default volume is the US cup unless a page explicitly uses metric or UK standards.
Unit standards
- Mass: grams (g).
- Volume: mL, US cup, tbsp, tsp.
- Assumed temperature: room temperature unless stated otherwise.
Examples and edge cases
- Fresh herbs are lighter than dried by volume (USDA FDC).
- Chopped vs whole leaves pack differently (USDA FDC).
- Moisture loss in drying increases mass per spoon (USDA FDC).
Last updated: 2026-05-31